diff --git a/frontend/src/components/MainComponent/MainComponent.tsx b/frontend/src/components/MainComponent/MainComponent.tsx
index 220564b4..528c23bd 100644
--- a/frontend/src/components/MainComponent/MainComponent.tsx
+++ b/frontend/src/components/MainComponent/MainComponent.tsx
@@ -226,6 +226,13 @@ function MainComponent({
 			configItemId,
 			currentLevel
 		);
+		if (!resetDefence) {
+			addChatMessage({
+				message: 'Failed to reset defence configuration. Please try again.',
+				type: 'ERROR_MSG',
+			});
+			return;
+		}
 		addConfigUpdateToChat(defenceId, 'reset');
 		// update state
 		const newDefences = defences.map((defence) => {
diff --git a/frontend/src/service/defenceService.ts b/frontend/src/service/defenceService.ts
index cfe45390..933fad18 100644
--- a/frontend/src/service/defenceService.ts
+++ b/frontend/src/service/defenceService.ts
@@ -75,13 +75,19 @@ async function resetDefenceConfigItem(
 	defenceId: DEFENCE_ID,
 	configItemId: DEFENCE_CONFIG_ITEM_ID,
 	level: LEVEL_NAMES
-): Promise<DefenceResetResponse> {
-	const response = await post(`${PATH}/resetConfig`, {
+): Promise<DefenceResetResponse | null> {
+	return post(`${PATH}/resetConfig`, {
 		defenceId,
 		configItemId,
 		level,
-	});
-	return (await response.json()) as DefenceResetResponse;
+	}).then(
+		async (response) => {
+			return (await response.json()) as DefenceResetResponse;
+		},
+		() => {
+			return null;
+		}
+	);
 }
 
 function validatePositiveNumberConfig(value: string) {